Análisis de los parámetros de los acelerogramas registrados en los seísmos de Lorca, de interés para la Ingeniería

Teresa Susagna (1) , Luis Cabañas (2) , Xavier Goula (3) , Juan Manuel Alcalde (4) , Myriam Belvaux (5)

1 IGC - Institut geològic de Catalunya
2 IGN - Instituto Geografico Nacional
3 IGC - Institut geològic de Catalunya
4 Instituto Geográfico Nacional
5 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)

Seismic crisis occurred in Lorca (Murcia) on 11th May 2011 originated an important number of accelerograms recorded in the IGN stations. The analysis of uniformly computed parameters has produced interesting results for Earthquake Engineering, in particular those recorded in Lorca. Strong ground motion has been specially observed in the horizontal component perpendicular to the Alhama de Murcia fault, at the origin of the earthquake. Values of PGA= 0,37g and CAV= 0.27g*s seems to be compensated by a short duration of the motion producing a macroseismic Intensity not greater than VII in Lorca. The contribution of near field component of ground motion due to the rupture propagation to and under the Lorca town was shown on acceleration, velocity and displacement time series and also on elastic response spectra.

Mots clés: Engineering parameters; Intensity; Strong ground motion; Near field; Directivity; EC8 spectral shapes

Domaines: Géophysique [physics.geo-ph]; Géophysique [physics.geo-ph]; Milieux et Changements globaux

Teresa Susagna, Luis Cabañas, Xavier Goula, Juan Manuel Alcalde, Myriam Belvaux. Análisis de los parámetros de los acelerogramas registrados en los seísmos de Lorca, de interés para la Ingeniería. 15th World Conference on Earthquake Engineering : 15th WCEE, Sep 2012, Lisbon, Portugal. ⟨hal-00704265⟩